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| Registros recuperados: 255 | |
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| GASPAROTTO, L.; FERREIRA, F. A.. |
| Mal-das-folhas da seringueira: historico de ocorrencias e importancia economica, distribuicao geografica e hospedeiros. Microcyclus ulei: sintomatologia, isolamento, caracteristicas culturais e morfologicas, patogenicidade, variabilidade para virulencia a Hevea spp. e para resistencia ao mal-das-folhas. Ciclo do mal-das-folhas. Epidemiologia do mal-das-folhas. Controle: areas de escape, fungicidas, resistencia da planta, enxertia de copa. |
| Tipo: Capítulo em livro técnico (INFOTECA-E) |
Palavras-chave: Mal-das-folhas; SALB; Morfologia; Ciclo; Virulencia; Brasil; Rubber tree; Fungal diseases; South American leaf blight; Geographic distribution; Host; Symptoms; Isolation methods; Morphology; Cicle; Resistance; Controle Químico; Distribuição Geográfica; Doença; Epidemiologia; Espécie; Folha; Fungo; Hevea; Hospedeiro; Isolamento; Microcyclus Ulei; Patogenicidade; Resistência; Seringueira; Sintoma; Chemical control; Epidemiology; Leaves; Pathogenicity; Virulence. |
| Ano: 1989 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/667342 |
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| Lima, Mariana G.; Montresor, Lângia C.; Pontes, Joana; Augusto, Ronaldo De C.; Silva, Jairo Pinheiro Da; Thiengo, Silvana C.. |
| Sympatric snail populations have been kept in the laboratory since the isolation of the parasite from the field. To evaluate the influence of the intermediate host in the infectivity of S. mansoni, this allopatric strain was compared to two sympatric strains, from different geographical origins, and with different time of maintenance in the laboratory. Snail–trematode compatibility was accessed for a total of nine possible combinations (three snail populations, three schistosome strains), using different charges of parasite: 1, 5, 10, and 15 miracidia/snail. Each S. mansoni strain was characterized according to its infectivity phenotype that reflects the efficiency of their infection mechanism and all B. glabrata populations were characterized according to... |
| Tipo: Text |
Palavras-chave: Snail-trematode; Host-parasite; Interaction; Compatible; Incompatible; Infectivity; Resistance; Schistosomiasis. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00489/60084/63419.pdf |
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| Agostini, Sylvain; Houlbrèque, Fanny; Biscéré, Tom; Harvey, Ben P.; Heitzman, Joshua M.; Takimoto, Risa; Yamazaki, Wataru; Milazzo, Marco; Rodolfo-metalpa, Riccardo. |
| Coral communities around the world are projected to be negatively affected by ocean acidification. Not all coral species will respond in the same manner to rising CO2 levels. Evidence from naturally acidified areas such as CO2 seeps have shown that although a few species are resistant to elevated CO2, most lack sufficient resistance resulting in their decline. This has led to the simple grouping of coral species into “winners” and “losers,” but the physiological traits supporting this ecological assessment are yet to be fully understood. Here using CO2 seeps, in two biogeographically distinct regions, we investigated whether physiological traits related to energy production [mitochondrial electron transport systems (ETSAs) activities] and biomass (protein... |
| Tipo: Text |
Palavras-chave: Ocean acidification; Hermatypic corals; Mitochondrial electron transport activity; Biomass; Resistance. |
| Ano: 2021 |
URL: https://archimer.ifremer.fr/doc/00677/78925/81293.pdf |
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| Delisle, Lizenn; Pauletto, Marianna; Vidal-dupiol, Jeremie; Petton, Bruno; Bargelloni, Luca; Montagnani, Caroline; Pernet, Fabrice; Corporeau, Charlotte; Fleury, Elodie. |
| Of all environmental factors, seawater temperature plays a decisive role in triggering marine diseases. Like fever in vertebrates, high seawater temperature could modulate the host response to pathogens in ectothermic animals. In France, massive mortality of Pacific oysters, Crassostrea gigas, caused by the ostreid herpesvirus 1 (OsHV-1) is markedly reduced when temperatures exceed 24°C in the field. In the present study we assess how high temperature influences the host response to the pathogen by comparing transcriptomes (RNA sequencing) during the course of experimental infection at 21°C (reference) and 29°C. We show that high temperature induced host physiological processes that are unfavorable to the viral infection. Temperature influenced the... |
| Tipo: Text |
Palavras-chave: Anti-viral molecular pathway; Host-pathogen interaction; Marine disease; OsHV-1; Resistance; Temperature. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00656/76806/77974.pdf |
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| Aquacop, Aquacop; Le Moullac, Gilles; Damez, D. |
| The notion of penaeid shrimp postlarvae quality, which implies a survival potential, is still a subjective parameter. The zootechnical criteria and the visual observations are not sufficient to evaluate the physiological condition of the hatchery reared postlarvae. The resistance of postlarvae to salinity shocks is a representative criteria of their condition. The goal of this study is to present a non-linear regression model at 2 variables (size, salinity) for the P. vannamei postlarvae resistance to salinity shocks. Between the second and the twentieth day after metamorphosis; 5 salinity shocks (20, 15, 10, 5 and 20/00) were tested daily, each one with 50 postlarvae. Survival rates were recorded after 2 hrs. Concurrently, the postlarvae growth in the... |
| Tipo: Text |
Palavras-chave: Salinity; Resistance; Growth; Postlarvae; Penaeus vannamei; Salinité; Résistance; Croissance; Postlarve; Penaeus vannamei. |
| Ano: 1991 |
URL: http://archimer.ifremer.fr/doc/1991/publication-4430.pdf |
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| Rouze, Heloise; Lecellier, Gael; Saulnier, Denis; Berteaux-lecellier, Veronique. |
| Coral disease outbreaks have increased over the last three decades, but their causal agents remain mostly unclear (e.g., bacteria, viruses, fungi, protists). This study details a 14-month-long survey of coral colonies in which observations of the development of disease was observed in nearly half of the sampled colonies. A bimonthly qPCR method was used to quantitatively and qualitatively evaluate Symbiodinium assemblages of tagged colonies, and to detect the presence of Vibrio spp. Firstly, our data showed that predisposition to disease development in general, and, more specifically, infection by Vibrio spp. in Acropora cytherea depended on which clades of Symbiodinium were harbored. In both cases, harboring clade D rather than A was beneficial to the... |
| Tipo: Text |
Palavras-chave: Coral disease; Dynamic; Resistance; Symbiodinium assemblages; Vibrio. |
| Ano: 2016 |
URL: http://archimer.ifremer.fr/doc/00307/41848/41080.pdf |
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| Morga, Benjamin; Renault, Tristan; Faury, Nicole; Lerond, Sophie; Garcia, Celine; Chollet, Bruno; Joly, Jean-pierre; Lapegue, Sylvie; Harrang, Estelle; Arzul, Isabelle. |
| Bonamiosis due to the parasite Bonamia ostreae has been associated with massive mortality outbreaks in European flat oyster stocks in Europe. As eradication and treatment are not possible, the control of the disease mainly relies on transfer restriction. Moreover, selection has been applied to produce resistant flat oyster families, which present better survival and lower prevalence than non-selected oysters. In order to better understand the mechanisms involved in resistance to bonamiosis, cellular and molecular responses of 2 oyster groups (selected oysters and wild-type oysters) were analyzed in the context of experimental injection and cohabitation infections. Cellular responses including non-specific esterases detection, ROS production and... |
| Tipo: Text |
Palavras-chave: Bonamia ostreae; Protozoan; Ostrea edulis; Resistance; Experimental infection; Haemocytes; Gene expression; Apoptosis. |
| Ano: 2017 |
URL: http://archimer.ifremer.fr/doc/00405/51665/52213.pdf |
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| Smits, M.; Artigaud, Sebastien; Bernay, B.; Pichereau, Vianney; Bargelloni, L.; Paillard, Christine. |
| Marine mollusk aquaculture has more than doubled over the past twenty years, accounting for over 15% of total aquaculture production in 2016. Infectious disease is one of the main limiting factors to the development of mollusk aquaculture, and the difficulties inherent to combating pathogens through antibiotic therapies or disinfection have led to extensive research on host defense mechanisms and host-pathogen relationships. It has become increasingly clear that characterizing the functional profiles of response to a disease is an essential step in understanding resistance mechanisms and moving towards more effective disease control. The Manila clam, Ruditapes philippinarum, is a main cultured bivalve species of economic importance which is affected by... |
| Tipo: Text |
Palavras-chave: Bivalve; Diseases; Resistance; Manila clam; Vibrio tapetis; Proteomics; Immune response. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00615/72670/71758.pdf |
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| Registros recuperados: 255 | |
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